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Bike Helmets - RA Cycles

Bike Helmets

RA Cycles carries road bike helmets, aero and triathlon helmets, mountain bike helmets, and youth helmets from Giro, Kask, MET, Lazer, Bell, Oakley, Scott, and Mavic. The road lineup runs from everyday training helmets with high ventilation — the Giro Helios Spherical, Giro Eclipse Pro Spherical, and Giro Aries Spherical — up through Kask's Protone Icon and Elemento, which cover the premium road and climbing range. For aero and triathlon, the Giro Aerohead MIPS, MET Trenta 3K Carbon, and MET Manta MIPS offer wind-tunnel-developed drag reduction with varying levels of ventilation depending on conditions and race format. Mountain bike helmets include both trail-open and full-face options — the Giro Montaro MIPS III and Bell XR Spherical cover the trail and enduro range. Most helmets in this collection include MIPS rotational protection as standard.

Not sure which helmet fits your discipline or head shape? Our team can walk you through fit system differences, MIPS vs. non-MIPS tradeoffs, and ventilation comparisons across road and aero models.

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  • Giro Escape MIPS Helmet

    Sale price $10499 Regular price $14995

    Only Available In: S

  • Giro Merit Spherical Womens Helmet Matte Ano Harbor Blue Giro Merit Spherical Womens Helmet Matte Ano Harbor Blue Women's

    Giro Merit Spherical Womens Helmet

    Sale price $11000 Regular price $22000

    Only Available In: S, M

  • Giro Eclipse Spherical Helmet

    Sale price $20999 Regular price $29995

    Only Available In: S, L, M

  • Giro Helios Spherical Helmet

    (0)
    Sale price $16659 Regular price $27995

    Only Available In: S, M, L

  • Giro Manifest Spherical Helmet

    +5
    Sale priceFrom $15599 Regular price $25995

    Only Available In: S, M, L

  • Giro Caden Helmet

    Regular price $7000

    Only Available In: S, M

  • Giro Flak Helmet

    Regular price $4500

    Only Available In: L

  • Giro Artex MIPS Helmet

    (1)
    +3
    Sale priceFrom $6998 Regular price $14000

    Only Available In: S, L, M

  • Giro Aether Spherical Helmet

    Sale priceFrom $13298 Regular price $30000

    Only Available In: S

  • Giro Disciple Mips Helmet

    Sale price $12498 Regular price $25000

    Only Available In: XS, L

  • Bell Super Air Spherical Helmet

    Regular price $23500
  • Bell Super Air R MIPS Helmet

    Regular price $32995
  • Bell Sidetrack II Mips Child Helmet

    Sale price $5599 Regular price $7995
  • Bell Sidetrack II Mips Youth Helmet

    Sale price $5599 Regular price $7995
  • Bell Super 3R/2R Chinbar

    Regular price $7500

Bike Helmet Buying Guide

Choosing the right bike helmet comes down to three variables: fit, ventilation, and protection standard. Road helmets prioritize ventilation and weight — more vents mean a cooler ride, though highly vented helmets trade some structural coverage for airflow. Aero and triathlon helmets seal those vents to minimize drag, which measurably reduces aerodynamic resistance in time trials and triathlons at speeds above 25 mph, but runs warmer on long efforts. Mountain bike helmets extend protection at the temples and rear of the skull and typically include a visor for trail debris and sun. MIPS — the Multi-directional Impact Protection System — adds a low-friction slip-plane inside the shell that allows the helmet to rotate 10–15mm on oblique impact, addressing the rotational forces that account for a significant percentage of cycling head injuries. Spherical technology, used by Giro and Bell in their top-tier helmets, achieves a similar rotational compliance through a ball-and-socket liner construction. All helmets at RA Cycles meet applicable CPSC and CE safety certification standards.

Shop by brand: Giro helmetsKask helmetsLazer helmets. Shop by discipline: men's road bike helmetswomen's road bike helmetsmen's triathlon helmetswomen's triathlon helmetsmen's MTB helmetswomen's MTB helmets.

Kask leads the premium tier with the Mistral and Bambino Pro for aero riding and the Nirvana for road. Giro’s Aerohead MIPS II is one of the best-ventilated aero helmets available — a genuine step forward from traditional time trial lids. MET’s Trenta 3K Carbon is built around an ultra-light carbon shell with exceptional ventilation for its aero classification. Lazer rounds out the collection with road and MTB options at multiple price points, and Bell covers both categories with a broad fit range.

Shop by discipline: men’s road bike helmets, men’s mountain bike helmets, or browse all Kask helmets.

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